smpallen99

defmodule Constants do
  @moduledoc """
  An alternative to use @constant_name value approach to defined reusable 
  constants in elixir. 

  This module offers an approach to define these in a
  module that can be shared with other modules. They are implemented with 
  macros so they can be used in guards and matches

  ## Examples: 

joakimk

# This installs a PXE boot server.
#
# It's based on https://help.ubuntu.com/community/DisklessUbuntuHowto.
# It's been used with ubuntu-10.10-server-amd64.iso and ubuntu-10.10-server-i386.iso.
#
# It requires two network cards. One for access to the outside world and one
# for a private network of PXE clients. I've choosen this setup to not cause problems
# with DHCP on the normal network.
#
# It also requires that you have a second partition mounted on /nfsroot.

joakimk

1 computers  -  1 cpus:  29 minutes (rake spec)
5 computers  - 13 cpus:   4 minutes (rake testbot:spec)
10 computers - 25 cpus:   2 minutes (rake testbot:spec) (about 60% cpu efficiency)

The testbot communication overhead is about 2-5 seconds per run. Fetching the code
and setting up the test environment takes a bit longer. The jobs are not being
perfectly balanced. There is still plenty of room for optimizations.